Charge method for battery, storage medium, and terminal

Patent metadata

Field	Value
Publication number	US-12184113-B2
Application number	US-201917619601-A
Country	US
Kind code	B2
Filing date	Dec 20, 2019
Priority date	Dec 10, 2019
Publication date	Dec 31, 2024
Grant date	Dec 31, 2024

Abstract

A charge method for a battery, a storage medium, and a terminal are provided and include: acquiring a discharge current of the battery when the battery is in a charge state; determining whether the discharge current is smaller than a predetermined current threshold value; if yes, determining whether the discharge current is in a stable state within a predetermined time period; and selecting a target voltage from a plurality of sample voltages in a predetermined voltage set according to a result of the stable state, adopting the target voltage as a charge voltage to charge the battery, and continuing to perform the determining whether the discharge current is smaller than the predetermined current threshold value.

First claim

What is claimed is:

1. A charge method for a battery, comprising:
acquiring a discharge current of the battery when the battery is in a charge state;
determining whether the discharge current is smaller than a predetermined current threshold value;
determining, in response to determining that the discharge current is smaller than the predetermined current threshold value, whether the discharge current is in a stable state within a predetermined time period; and
selecting a target voltage from a plurality of sample voltages in a predetermined voltage set according to a result of determining whether the discharge current is in the stable state, adopting the target voltage as a charge voltage to charge the battery, and continuing to perform the determining whether the discharge current is smaller than the predetermined current threshold value.

2. The method of claim 1 , wherein the selecting the target voltage from the plurality of sample voltages in the predetermined voltage set according to the result of determining whether the discharge current is in the stable state comprises:
selecting the target voltage from the plurality of sample voltages in the predetermined voltage set according to the discharge current, when the discharge current is in the stable state within the predetermined time period; and
remaining a present charge voltage, when the discharge current is not in the stable state within the predetermined time period.

3. The method of claim 2 , wherein before the selecting the target voltage from the plurality of sample voltages in the predetermined voltage set according to the discharge current, the method further comprises:
classifying the plurality of sample voltages in the predetermined voltage set into a plurality of grades to acquire a voltage value corresponding to each of the grades, wherein when the voltage value is smaller, the grade is higher.

4. The method of claim 3 , wherein the selecting the target voltage from the plurality of sample voltages in the predetermined voltage set according to the discharge current comprises:
identifying, according to all results of determining whether the discharge current is in the stable state, a number of times that the discharge current is in the stable state to acquire a stable state sequence;
selecting, according to the stable state sequence, a corresponding sample voltage from the plurality of sample voltages in the predetermined voltage set, wherein when the stable state sequence is greater, a grade of the corresponding sample voltage is higher and the voltage value is smaller; and
identifying the target voltage according to the voltage value corresponding to the grade of the corresponding sample voltage.

5. The method of claim 4 , further comprising:
adopting a sample voltage corresponding to the discharge current which is in the stable state for a first time as the charge voltage to charge the battery, when the discharge current is greater than or equal to the predetermined current threshold value.

6. The method of claim 1 , wherein after the adopting the target voltage as the charge voltage to charge the battery, the method further comprises:
stopping charging the battery when a charge current of the battery is smaller than a charge cut-off current.

7. The method of claim 1 , wherein the discharge current is ranged from 0 milliampere to 100 milliamperes.

8. A non-volatile computer readable storage medium, wherein the computer readable storage medium stores computer programs therein, and the computer programs are called by a central processing unit to perform the following steps of:
acquiring a discharge current of the battery when the battery is in a charge state;
determining whether the discharge current is smaller than a predetermined current threshold value;
determining, in response to determining that the discharge current is smaller than the predetermined current threshold value, whether the discharge current is in a stable state within a predetermined time period; and
selecting a target voltage from a plurality of sample voltages in a predetermined voltage set according to a result of determining whether the discharge current is in the stable state, adopting the target voltage as a charge voltage to charge the battery, and continuing to perform the determining whether the discharge current is smaller than the predetermined current threshold value.

9. The non-volatile computer readable storage medium of claim 8 , wherein in the selecting the target voltage from the plurality of sample voltages in the predetermined voltage set according to the result of determining whether the discharge current is in the stable state, the computer programs are called by the central processing unit to perform the following steps of:
selecting the target voltage from the plurality of sample voltages in the predetermined voltage set according to the discharge current, when the discharge current is in the stable state within the predetermined time period; and
remaining a present charge voltage, when the discharge current is not in the stable state within the predetermined time period.

10. The non-volatile computer readable storage medium of claim 9 , wherein before the selecting the target voltage from the plurality of sample voltages in the predetermined voltage set according to the discharge current, the computer programs are called by the central processing unit to further perform the following steps of:
classifying the plurality of sample voltages in the predetermined voltage set into a plurality of grades to acquire a voltage value corresponding to each of the grades, wherein when the voltage value is smaller, the grade is higher.

11. The non-volatile computer readable storage medium of claim 10 , wherein in the selecting the target voltage from the plurality of sample voltages in the predetermined voltage set according to the discharge current, the computer programs are called by the central processing unit to perform the following steps of:
identifying, according to all results of determining whether the discharge current is in the stable state, a number of times that the discharge current is in the stable state to acquire a stable state sequence;
selecting, according to the stable state sequence, a corresponding sample voltage from the plurality of sample voltages in the predetermined voltage set, wherein when the stable state sequence is greater, a grade of the corresponding sample voltage is higher and the voltage value is smaller; and
identifying the target voltage according to the voltage value corresponding to the grade of the corresponding sample voltage.

12. The non-volatile computer readable storage medium of claim 11 , wherein when the discharge current is greater than or equal to the predetermined current threshold value, the computer programs are called by the central processing unit to perform the following steps of:
adopting a sample voltage corresponding to the discharge current which is in the stable state for a first time as the charge voltage to charge the battery.

13. The non-volatile computer readable storage medium of claim 8 , wherein after the adopting the target voltage as the charge voltage to charge the battery, the computer programs are called by the central processing unit to further perform the following steps of:
stopping charging the battery when a charge current of the battery is smaller than a charge cut-off current.

14. The non-volatile computer readable storage medium of claim 8 , wherein the discharge current is ranged from 0 milliampere to 100 milliamperes.

15. A terminal, comprising a central proce

Assignees

• Huizhou Tcl Mobile Communication Co Ltd

Inventors

• Zhang Shuisha
• Ye Peng

Classifications

• H02J7/94 Primary

  in response to battery current · CPC title

• H02J2105/44

  Portable electronic devices · CPC title

• H02J7/96

  in response to battery voltage · CPC title

• H02J7/865

  Battery or charger load switching, e.g. concurrent charging and load supply (H02J7/50 takes precedence) · CPC title

• H02J7/875 Primary

  Charging or discharging for charge maintenance, battery initiation or rejuvenation · CPC title